97 



21a. Corolla deeply split on the upper side and the stamens pro- 

 truding; upper lip of the calyx much 'shorter than the lower 

 (5 10 dm. high; flowers pink-purple, in terminal spikes, sum- 

 mer) (Wood Sage) 22. 



21b. Corolla not deeply split on the upper side 23. 



22a. Calyx canescent Wood Sage, Teucrium canadense. 



22b. Calyx villous Wood Sage^ Teucrium occidentale. 



23a. Flowers in dense terminal head-like spikes, none axillary (1 5 

 dm. high; flowers pink-purple or blue, in summer) 



Self-heal, Prunella vulgaris. 



23b. Some or all of the flowers in axillary clusters 24. 



24a. Leaves linear, entire (1 4 dm. high; flowers purple, sum- 

 mer) 25. 

 24b. Leaves oblong to ovate (summer) 26. 



25a. Pedicels shorter than the calyx 



Summer Savory, Satureja hortensis. 

 25b. Pedicels much longer than the calyx Calamint, Satureja glabra. 



26a. Leaves 1 cm. long or less, entire (stems growing in mats, 

 1 3 dm. long; flowers purple, in summer) 



Wild Thyme, Thymus serpyllum. 



26b. Leaves dentate (flowers purple, summer) 27. 



27a. Flowers subtended by bracts as long as the calyx (2 5 dm. 

 high) Basil, Satureja vulgaris. 



27b. Flowers with minute bracts or none (1 3 dm. high) 



Basil-thyme, Satureja acinos 



28a. Corolla 2-lipped or nearly regular, the upper lip flattened, 

 not conspicuously arched over the stamens 29. 



28b. Corolla conspicuously 2-lipped, the stamens ascending under 

 the concave upper lip 42. 



29a. Flowers in dense terminal spikes; corolla 2-lipped (815 dm. 



high; summer) 30. 



29b. Flowers peduncled, 1 4 in the axils of linear leaves 25b. 

 29c. Flowers in many-flowered whorls, which are axillary or terminal, 



or aggregated into terminal spikes or racemes 31. 



30a. Corolla yellowish Giant Hyssop, Agastache nepetoides. 



30b. Corolla purplish 



Giant Hyssop, Agastache scrophulariaefolius. 



31a. Corolla distinctly irregular, the lower lip longer than the upper 



32. 

 31b. Corolla almost regular, the lobes nearly uniform in size 35. 



32a. Stem-leaves sessile or very nearly so (flowers blue) 33. 

 32b. Stem-leaves long-petioled 34. 



